Here's my take on your questions:
1) I stick to indicators that have worked for me in the past or which I understand. I use RSI (Spyfrat style), Moving Averages (50 100 200), and the MACD. These are indicators, but not to be used as some supreme decision makers, which leads me to answer your second question...

2) There is an order in which I consider my moves. With one (1) being the most important, I always value (1) Trend, (2) Pattern, (3) Volume and then the indicators.